No.3 Abs Warning Light Does Not Illuminate With Ignition Switch On; No.4 Brake System Warning Light Does Not Illuminate With Ignition Switch On - Mazda 2002 6 Workshop Manual

TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)

NO.3 ABS WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCH ON

3 ABS warning light does not illuminate with ignition switch on.
[TROUBLESHOOTING HINTS]
• Malfunction of instrument cluster or ABS/TCS HU/CM
Diagnostic procedure
STEP
1 COMFIRM DTC U1900 USING WDS OR
EQUIVALENT
• Retrieve DTC from PCM, ABS/TCS and
instrument cluster.
• Is DTC U1900 retrieved?
2 COMFIRM THE FOLLOWING PIDs USING
WDS OR EQUIVALENT:
• ABS_MSG
• PCM_MSG
• Is "not present" massage displayed on WDS
or equivalent?
End Of Sie

NO.4 BRAKE SYSTEM WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCH ON

4 BRAKE system warning light does not illuminate with ignition switch on.
[TROUBLESHOOTING HINTS]
• Malfunction of instrument cluster or ABS/TCS HU/CM
STEP
1 COMFIRM DTC U1900 USING WDS OR
EQUIVALENT
• Retrieve DTC from PCM, ABS/TCS and
instrument cluster.
• Is DTC U1900 retrieved?
2 COMFIRM THE FOLLOWING PIDs USING
WDS OR EQUIVALENT:
• ABS_MSG
• PCM_MSG
• Is "not present" massage displayed on WDS
or equivalent?
End Of Sie
INSPECTION
INSPECTION
Yes Go to next step.
No Inspect instrment cluster. If OK, then go to step6.
Yes Replace instrument cluster (open circuit in instrument
cluster).
No Network communication, for related system is malfunction.
Repair or replace as neccessary.
Yes Go to next step.
No Inspect instrment cluster. If OK, then go to step6.
Yes Replace instrument cluster (open circuit in instrument
cluster).
No Network communication, for related system is malfunction.
Repair or replace as neccessary.
A6E699067650W07
ACTION
A6E699067650W08
ACTION
P–109
P